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Comparison of lead-free solder paste and leaded solder paste
Oct 09, 2022
10-09
2022
Solder paste is mainly a paste-like mixture composed of solder powder and flux. It is mainly used in the SMT processing industry to solder electronic components such as resistors, capacitors, and ICs on PCB boards. Solder paste is divided into lead-free solder paste and leaded solder paste. Lead-free solder paste is an important material for electronic component soldering. Lead-free solder paste refers to the requirement of lead content less than 1000ppm (<0.1%) to comply with environmental protection ROHS Standard; leaded solder paste literally means solder paste containing lead. These two solder pastes are very different. Today we will organize and analyze them as follows:
Correct use of solder wire
Oct 09, 2022
10-09
2022
Correct use of solder wire can effectively improve the efficiency of soldering, so how to operate to meet its standards? We generally think that mastering the correct and skilled solder wire welding operation method is the first and most important step rate. Summarizing a large amount of information and years of experience of technical engineers in the solder industry, we have drawn some attention directions and welding standards for the correct use of solder wire:
How to choose solder paste and what to pay attention to when choosing?
Oct 08, 2022
10-08
2022
In the last issue, we focused on the knowledge of the classification method of solder paste, so how should we choose solder paste in practical applications? The good selection of solder paste will greatly improve the production process and efficiency, and the quality of solder paste will also Regarding the quality of SMT processed products, how to choose solder paste can refer to the following points according to the performance and usage requirements of solder paste:
1. The activity of the solder paste can be determined according to the cleanliness of the surface of the printed board. At present, the RMA grade is generally used, and the RA grade is used if necessary.
What is the relationship between solder wire and solder bar?
Oct 08, 2022
10-08
2022
The difference between rosin, flux, flux paste and solder paste and their respective functions
Sep 30, 2022
09-30
2022
In SMT processing, rosin, flux, flux paste, and solder paste are all relatively common welding materials. With the continuous development of technology, people process substances with different components into a more useful material. Therefore, some People often confuse rosin, flux, flux paste, and solder paste.
The role and advantages of high temperature anti-oxidation solder bar
Sep 30, 2022
09-30
2022
The high temperature anti-oxidation solder bar is specially manufactured for electronic manufacturers whose solder furnace temperature is 400°C-500°C. Provide building templates for electronic components containing enameled wires, and tinning for coolers (such as transformers, inductors, coils, relays, degaussing coils, etc.).
recautions for storage of lead-free solder paste
Sep 29, 2022
09-29
2022
The preservation of lead-free solder paste should be stored in a sealed form in a refrigerator with constant temperature and humidity (note that it is refrigerated instead of freezing). There are special freezers for lead-free solder paste on the market, and the temperature is 2℃～8℃ If the temperature is too high, the alloy powder in the lead-free solder paste does not chemically react with the flux, which will reduce the viscosity and activity and affect the performance of the lead-containing solder paste; if the temperature is too low , it will cause crystallization and deteriorate the shape of the solder paste.
How to choose solder paste correctly
Sep 29, 2022
09-29
2022
The main difference between high-temperature solder paste and low-temperature solder paste is that the temperature of some chips cannot be high when passing through the furnace, and bubbles will form when the temperature is high, but the low-temperature solder paste may cause problems with some vibration pins after the temperature is generated (higher). , High temperature solder paste is generally used in SMT components with large heat generation. Some components generate large heat and can withstand high temperature, while low temperature solder paste contains bismuth element, which is relatively brittle. If the components need to move or vibrate, it is not recommended to use Low temperature solder paste.
What kind of solder bars should I use for wave soldering?
Sep 29, 2022
09-29
2022
When electronic manufacturers buy new wave soldering, whether it is a lead-free process or a lead-containing process, they must use tin bars with relatively high purity, which is related to the welding quality of future products and the manufacturer's control of tin costs. Because the wave soldering furnace will corrode the copper and aluminum elements fused into the components and the wave soldering fixture in the tin furnace during the long-term use. In this way, the proportion of these impurities in the tin furnace will become larger and larger, so that the viscosity of the tin in the wave soldering furnace will become larger and larger.
What is the difference between solder paste and tin bar?
Sep 29, 2022
09-29
2022
Solder paste and tin bar products are both solder products and are widely used in the electronics industry. So what is the difference between solder paste and tin bar? The following is a summary of the differences between solder paste and solder wire by double Chile solder manufacturers:
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